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MIC4811YMM-TR

CategoryAnalog mixed-signal IC    Drivers and interfaces   
File Size607KB,13 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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Parameter NameAttribute value
Is it Rohs certified?conform to
MakerMicrochip
package instructionTSSOP, TSSOP10,.19,20
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time17 weeks
Interface integrated circuit typeLED DISPLAY DRIVER
JESD-30 codeS-PDSO-G10
JESD-609 codee4
length3 mm
Humidity sensitivity level2
Multiplex display functionNO
Number of functions1
Number of segments6
Number of terminals10
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSSOP
Encapsulate equivalent codeTSSOP10,.19,20
Package shapeSQUARE
Package formSMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)260
Maximum seat height1.1 mm
Maximum supply voltage5.5 V
Minimum supply voltage3 V
Nominal supply voltage5 V
surface mountYES
Temperature levelAUTOMOTIVE
Terminal surfaceNickel/Palladium/Gold (Ni/Pd/Au)
Terminal formGULL WING
Terminal pitch0.5 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width3 mm
MIC4811
High Current 6 Channel Linear WLED
Driver with DAM™ and Ultra Fast
PWM™ Control
General Description
The MIC4811 is a high efficiency linear White LED
(WLED) driver designed to drive up to six high current
WLEDs for signage lighting. The MIC4811 provides the
highest possible efficiency as this architecture has no
switching losses present in traditional charge pumps or
inductive boost circuits. The MIC4811 provides six linear
drivers which maintain constant current for up to six
WLEDs. It features a typical dropout of 100mV at 50mA.
The MIC4811 features Dynamic Average Matching™
(DAM™) which is specifically designed to provide optimum
matching across all WLEDs. The high accuracy (±1%
typical) current regulated WLED channels ensure uniform
display illumination under all conditions. The brightness is
controlled through an Ultra Fast PWM™ interface
operating down to less than 1% duty cycle.
The MIC4811 is available in an 10-pin MSOP package
with a junction temperature range of -40°C to +125°C.
Datasheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
High Efficiency (no Voltage Boost losses)
Ultra Fast PWM™ control (200Hz to 500kHz)
Input voltage range: 3.0V to 5.5V
LED current range up to 50mA per channel
Programmable LED current with external resistor
Dropout of 100mV at 50mA
Matching better than ±1% (typical)
Current Accuracy better than ±1% (typical)
Maintains proper regulation regardless of how many
channels are utilized
10-pin MSOP package
Applications
Billboard displays
Marquee displays
Instrument displays
LCD display modules
____________________________________________________________________________________________________________
Typical Application
High Current Lighting (Six WLEDs)
Ultra Fast PWM, DAM and Dynamic Average Matching are trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
408
) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
April 2011
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